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ACCESSORIES
pH CALIBRATION SOLUTIONS
HI 50003-01 pH 3.00 buffer solution, 20 mL sachet, 10 pcs
HI 50003-02 pH 3.00 buffer solution, 20 mL sachet, 25 pcs
HI 70007P pH 7.01 buffer solution, 20 mL sachet, 25 pcs
HI 5003 pH 3.00 buffer solution, 500 mL bottle
HI 7006L pH 6.86 buffer solution, 500 mL bottle
HI 7007L pH 7.01 buffer solution, 500 mL bottle
HI 8006L pH 6.86 buffer solution in FDA bottle, 500 mL
HI 8007L pH 7.01 buffer solution in FDA bottle, 500 mL
ELECTRODE STORAGE SOLUTION
HI 70300L Storage solution, 500 mL bottle
HI 80300L Storage solution in FDA bottle, 500 mL
ELECTRODE CLEANING SOLUTIONS
HI 70000P Electrode rinsing solution, 20 mL sachet, 25 pcs
HI 7061L General cleaning solution, 500 mL bottle
HI 70635L Cleaning solution for wine deposits, 500 mL bottle
HI 70636L Cleaning solution for wine stains, 500 mL bottle
HI 7073L Protein cleaning solution, 500 mL bottle
HI 7074L Inorganic cleaning solution, 500 mL bottle
HI 7077L Oil & Fat cleaning solution, 500 mL bottle
HI 8061L General cleaning solution in FDA bottle, 500 mL
HI 8073L Protein cleaning solution in FDA bottle, 500 mL
HI 8077L Oil & Fat Cleaning solution in FDA bottle, 500 mL
ELECTROLYTE SOLUTION
HI 7082 3.5M KCl electrolyte solution, 4 x 30 mL, for double junction
electrodes
HI 8082 3.5M KCl electrolyte solution in FDA bottle, 4 x 30 mL, for
double junction electrodes
ORP PRETREATMENT SOLUTIONS
HI 7091L Reducing pretreatment solution, 500 mL bottle
HI 7092L Oxidizing pretreatment solution, 500 mL bottle
Cleaning procedure
After use, clean the electrode by immersing it in the proper cleaning solution (HI
700635 or HI 700636) for 5 minutes.
If case of slow and unreliable readings, it is recommended to perform the
following procedure for cleaning the junction:
1. Shift upwards the PTFE collar. If the collar does not shift easily, immerse it
into warm water.
2. Wipe gently the electrode surface with a soft and clean tissue.
3. In case of persistent wine or must residual, wet the tissue with cleaning
solution (HI 700635 or HI 700636).
4. Put back the collar in its original position.
Troubleshooting
Evaluate your electrode performance based on the following.
• Noise (Readings fluctuate up and down) could be due to:
– Clogged/Dirty Junction: refer to the cleaning procedure above.
– Loss of shielding due to low electrolyte level (in refillable electrodes
only): refill with fresh HI 7082 solution.
• Dry Membrane/Junction: soak in HI 70300 storage solution for 1 hour.
• Drifting: soak the electrode tip in warm (approx. 50-60°C) HI 7082
solution for one hour and rinse the tip with distilled water. Refill with fresh
HI 7082 solution.
• Low Slope: refer to the cleaning procedure above.
• No Slope: check the electrode for cracks in glass stem or bulb and replace
the electrode.
• Slow Response/Excessive Drift: soak the tip in HI 7061 solution for 30
minutes, rinse thoroughly in distilled water and then follow the cleaning
procedure above.
